2011221212010 has 32 divisors (see below), whose sum is σ = 4835154002112. Its totient is φ = 535411979520.

The previous prime is 2011221211963. The next prime is 2011221212017. The reversal of 2011221212010 is 102121221102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2011221212017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57086911 + ... + 57122130.

It is an arithmetic number, because the mean of its divisors is an integer number (151098562566).

Almost surely, 2^{2011221212010} is an apocalyptic number.

2011221212010 is an abundant number, since it is smaller than the sum of its proper divisors (2823932790102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011221212010 is a wasteful number, since it uses less digits than its factorization.

2011221212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114209638.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2011221212010 its reverse (102121221102), we get a palindrome (2113342433112).

The spelling of 2011221212010 in words is "two trillion, eleven billion, two hundred twenty-one million, two hundred twelve thousand, ten".